Factory Second Baseplates (Pack of 4 - 10" X 10") - Minor Defects - Guaranteed 100% Compatible With LEGO Blocks (Green) by Creative QT May have slight bow and minor color blemishes (see photos). Guaranteed 100% fit with lego and duplo style blocks or your money back. Perfect for glue down application - add a little weight while the glue dries and they will be as good as any other plate. 20" x 20" total area covered. 400 square inches of building space. *the plates are not affiliated with or endorsed in any way by lego, a registered trademark of lego group of companies.